BIO LAB Worksheet Mitosis and Meiosis
5 Pages

BIO LAB Worksheet Mitosis and Meiosis

Course: BIO 110, Fall 2009

School: American

Word Count: 894

Rating:

Document Preview

Mitosis and Meiosis Lab Worksheet Assignment Name Vivy Vu Section Lab 7 Date October 20, 2009 Mitosis 1. Use your root tip slide to count 50 dividing cells. Tabulate the numbers of those 50 cells that are in each stage of mitosis (prophase, metaphase, anaphase, and telophase). Record the data below. Number of cells in prophase__________________46__________________ Number of cells in...

Unformatted Document Excerpt
Coursehero >> District of Columbia >> American >> BIO 110

Course Hero has millions of student submitted documents similar to the one
below including study guides, practice problems, reference materials, practice exams, textbook help and tutor support.

Course Hero has millions of student submitted documents similar to the one below including study guides, practice problems, reference materials, practice exams, textbook help and tutor support.

and Mitosis Meiosis Lab Worksheet Assignment Name Vivy Vu Section Lab 7 Date October 20, 2009 Mitosis 1. Use your root tip slide to count 50 dividing cells. Tabulate the numbers of those 50 cells that are in each stage of mitosis (prophase, metaphase, anaphase, and telophase). Record the data below. Number of cells in prophase__________________46__________________ Number of cells in metaphase_________________1__________________ Number of cells in anaphase__________________0 _________________ Number of cells in telophase__________________3__________________ 1 pt 1 pt 1 pt 1 pt Based on this data, what conclusions would you draw as to the length of time a cell spends in each of these respective stages? It spends a lot of time in prophase__ ___________________ 2 pts 2. Select, at random, five separate areas in the zone of multiplication. In each area, count about 50 cells in the field of view, and record how many of those cells are undergoing mitosis. Record the data in Table 1 and compute the percentage of dividing cells. The average of these five fields of view will give a close approximation of the mitotic index for an onion root tip. Table 1 Onion Root Mitotic Index Field of views Area 1 Area 2 Total # of Cells # of Cells In Mitosis Percentage of Cells in Mitosis 50 12 24% 50 14 28% Area 3 50 20 40% Area 4 50 19 38% 50 16 32% Area 5 5 pts Average 50 16.2 32.4% 49 Meiosis 3. How many chromosomes does a male grasshopper somatic cell have? 1 pt 23 chromosomes How many chromosomes does a grasshopper primary spermatocyte have? 1 pt 12 pairs (11 pairs of autosomes + 1 pair of sex chromosome) How many chromosomes does a grasshopper secondary spermatocyte have? 1 pt 6 pairs (half of primary) Nondisjunction 4. Nondisjunction During Meiosis II - Chromosome 21 Use the following page to diagram nondisjuction that has occurred during spermatogenesis. Start with a single dividing cell and draw the chromosomes as instructed. Your starting cell should have three homologous pairs of chromosomes in the replicative form for a total of 12 chromatids. One homologous pair is very short representing chromosome 21. One set from one parent should be a different color than the second set from the other parent. Draw the chromosomes through the normal phases of Meiosis I. Use one of the two cells from meiosis I to show how the smallest chromosome pair (chromosome 21) could line up incorrectly in metaphase II. Show nondisjunction occurring in this cell during anaphase II. The chromosome that failed to disjoin eventually does split, forming two chromosomes in anaphase II. Use the other cell from meiosis I to diagram the normal steps in meiosis II. Draw what is going on in the cells in each of these phases below. Recall that homologous chromosomes are paired during prophase I and remain paired during metaphase I. Your drawings should reflect this pairing. Dont forget to show the actual cell division and how the numbers of cells change. Finally, show the chromosomes that present are in the final 4 sperm cells. 50 10 pts Phase Prophase I Cell and Chromosome/chromatids Diagram Pro/Metaphase I Anaphase I Telophase I Prophase II A Pro/Metaphase II B A Anaphase II B A Telophase II B A Haploid daughter cells after cytokinesis: A B 51 B C D Indicate the number of chromosomes in each haploid daughter cell below. 2 pts Total number of chromosomes in Cell A (on left) __4___ Cell C __3___ Cell D __3__ (normal gametes have 3) Cell A (left) __2__ Cell B __0___ Cell B __2___ 2 pts Number of chromosomes 21 in Cell C __1___ Cell D __1___ How many chromosomes 21 end up in each of the sperm (A-D) produced by this meiosis? 4 2 pts List all of the possible genotypes of offspring that can be produced if these sperm fertilize normal oocytes. 50% normal 25% down syndrome 5. What is a karyotype and how can we tell if it is normal or abnormal? 2 pts Karyotype = complete set of chromosomes with 23 pairs Normal = girl has XX sex chromosomes; boy has XY sex chromosomes Abnormal = there is an extra X or Y chromosome or a missing X (for girls only causing Turner Syndrome) 6. Humans can survive with an extra X or Y chromosomes or even just one X chromosome. These individuals are extremely rare in the population. Choose a human disorder that is caused by having an abnormal number of either the X or Y chromosome. Describe how it is inherited, the characteristics of the disorder, and the quality of life for these affected individuals. 5 pts Turner Syndrome: Only affects girls missing part of one X chromosome or only born with one X chromosome tend to be shorter prevents ovaries from developing the proper way affects puberty affects the chances of having babies kidney problems, high blood pressure, becoming overweight, difference in physical appearance if having babies, it could affect them too this is NOT inherited, happens randomly when the reproductive cells are forming 52 6 pts Ave. # leukocytes in three fields 40X Type of leukocyte predominating (see poster) Erythrocyte morphology Normal blood 2 Leukemia 97 White Blood Cell: Neutrophils Lymphocytes Round-shaped Disc-shaped 8. Leukemia can be caused by mutations and in the example above by a translocation. When are translocations most likely to occur during the process of meiosis? 2 pts During the prophase stage of Meiosis 1 when there is crossing over REFERENCES (5 pts) "Turner Syndrome ." KidsHealth - the Web's most visited site about children's health. 27 Sep. 2009 <http://kidshealth.org/teen/diseases_conditions/genetic/turner.html>. "Turner syndrome - Genetics Home Reference." Genetics Home Reference - Your guide to understanding genetic conditions. 20 Oct. 2009 <http://ghr.nlm.nih.gov/ condition=turnersyndrome>. "Topic 9, Chromosome Mutations." Welcome to the School of Biological Sciences Illinois State University. 20 Oct. 2009 <http://www.bio.ilstu.edu/weber/b219/09_Chromosome_mutations.html>. 53

Find millions of documents on Course Hero - Study Guides, Lecture Notes, Reference Materials, Practice Exams and more. Course Hero has millions of course specific materials providing students with the best way to expand their education.

Below is a small sample set of documents:

American - BIO - 110
Bio chapter 3 (contd) Enzyme function (21) o Ability to speed up o w/o it = cells wont be able to move well (22) o max activity at 40degrees C (23) o denaturing = decrease activity o sickle cell anemia changes its shape cant carry oxy efficiently untreate
American - BIO - 110
Manipulating DNA WorksheetName Vivy Vu Section_ Date November 3, 2009Exercise 1: Build a sequence of DNAIs each groups DNA sequence of 5 base pairs (short for nucleotide pairs) the same or different? different How many variations of a sequence can take
American - BIO - 110
Bio Lab Study SheetsLab 4Definitions: Specific enzyme a particular enzyme will only affect the rate of a specific reaction; specificity depends on the enzymes shape of active site Active site portion of enzyme the binds the substrate and causes chemical
American - BIO - 110
Genetic Biotechnology Can put GFP into DNA Make chickens have no feathers Make fishes grow a lot bigger than usual Can mess with genes DNA technological toolbox o DNA polymerase: used in labs (taq polymerase: found in a bacteria, Thermaphilus aquaticus) o
American - BIO - 110
Vivy Vu &amp; Jenny Stitt Biology Lab: Deforestation Presentation September 30, 2009 TA Jamey ReddingTopic: Effect of deforestation on loss of species the sixth mass extinction most scientists believe the rate of loss is greater now than at any time in the h
American - BIO - 110
Bio FINAL review Chp 13-16, 19 CHAPTER 13: Mendel and the Gene: Patterns of Inheritance Mendel examined pea traits o Single gene, 2 alleles Monohybrid cross o Crossing of one trait Law of Segregation o 2 alleles separate during meiosis and end up in diffe
American - BIO - 110
Chp 13: Mendel and the Gene: Patterns of Inheritance Pea Traits o Studied different traits o 1 gene, 2 allele control o monohybrid cross one trait crossing kept breeding until they were homozygous pea plants called true breeding PP and pp, no Pp Genotype:
American - BIO - 110
Bio FINAL review Chp 13-16, 19 CHAPTER 13: Mendel and the Gene: Patterns of Inheritance Mendel examined pea traits o Single gene, 2 alleles Monohybrid cross o Crossing of one trait Law of Segregation o 2 alleles separate during meiosis and end up in diffe
American - BIO - 110
Chapter 16 *DNA always starts with 5 going towards 3 Central dogma o Every protein made in body must have gene o In every cell o Dont express all genes in all cells o Genes are all in the cell, but different cells express different genes o 2 step process
American - BIO - 110
BIO chapter 6: Lipids, membranes and first cells Surrounded by enzymes or membrane Made of lipids and proteins called plasma membrane Separates external and internal environment Lipids o Large hydrocarbon chains o 3 main classes Steroids Tend not to have
American - PHYSC - 210
HowtoWriteaGoodChemistryLabReportTitle page informative title name date course name and lab section # lab partner instructors name Abstract summary of report tells reader what to expect name general methods used brief description of results and major con
LSU - ART - 1001
Exam 2 Greece 1. Pre-Classical Greece: a. Cycladic Culture-Greek Island b. Helladic Culture-Greek mainland c. Minoan Culture-Island of Crete Early Minoan Art i. Cycladic Idols, Geometric simplification: Triangles, rectangles, cylinders Minoan Architecture
Harvard - BIO - 101
Chapter 52 Class Notes Population Ecology Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 52 Population Ecology Earths Fluctuating Populations: To understand human population growth, we must consider general principles of population ecology. Population
Harvard - BIO - 101
Chapter 51 Class Notes Behavioral Ecology Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 51 Behavioral Ecology Studying Behavior: Humans have probably studied animal behavior for as long as we have lived on Earth. As hunters, knowledge of animal behav
Harvard - BIO - 101
Chapter 50 Class Notes An Introduction to Ecology and the Biosphere Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 50 An Introduction to Ecology and the Biosphere Ecology: Ecology is the scientific study of the interactions between organisms and the e
Harvard - BIO - 101
Chapter 38 Class Notes Angiosperm Reproduction and Biotechnology Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 38 Angiosperm Reproduction and Biotechnology Seeds: A parasitic plant produces huge flowers that produce up to 4 million seeds. Many angios
Harvard - BIO - 101
Chapter 35 Class Notes Plant Structure, Growth, and Development Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 35 Plant Structure, Growth, and Development The Plant Body: The plant body has a hierarchy of organs, tissues, and cells. Plants, like multi
Harvard - BIO - 101
Chapter 33 Independent Notes Invertebrates Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 33 Invertebrates Invertebrates: Invertebrates, animals without a backbone, account for 95% of known animal species, and all but one of the 35 phyla that have bee
Harvard - BIO - 101
Chapter 32 Class Notes An Introduction to Animal Diversity Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 32 An Introduction to Animal Diversity Our Kingdom: Biologists have identified 1.3 million living species of animals, and estimates run to as man
Harvard - BIO - 101
Chapter 30 Class Notes Plant Diversity II: The Evolution of Seed Plants Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 30 Plant Diversity II: The Evolution of Seed Plants Feeding the World: Seeds changed the course of plant evolution, enabling their b
Harvard - BIO - 101
Chapter 29 Class Notes Plant Diversity I: How Plants Colonized Land Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 29 Plant Diversity I: How Plants Colonized Land The Greening of Earth: It is difficult to imagine the land without any plants or other o
Harvard - BIO - 101
Chapter 26 Class Notes An Introduction to Biological Diversity Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 26 The Tree of Life: An Introduction to Biological Diversity Changing Life on a Changing Earth: Life is a continuum extending from the earlie
Harvard - BIO - 101
Chapter 21 Class Notes The Genetic Basis of Development Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 21 The Genetic Basis of Development From Single Cell to Multicellular Organism: The application of genetic analysis and DNA technology to the study
Harvard - BIO - 101
Chapter 20 Class Notes DNA Technology and Genomics Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 20 DNA Technology and Genomics Understanding and Manipulating Genomes: Sequencing of the human genome was largely completed by 2003. DNA sequencing has d
Harvard - BIO - 101
Chapter 19 Class Notes Eukaryotic Genomes Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 19 Eukaryotic Genomes: Organization, Regulation, and Evolution Eukaryotic Genomes: Two features of eukaryotic genomes are a major information-processing challenge
Harvard - BIO - 101
Chapter 17 Class Notes From Gene to Protein Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 17 From Gene to Protein The Central Dogma: DNA RNA protein synthesis DNA is transcribed to RNA in a process called transcription (the same language). RNA transl
Harvard - BIO - 101
Chapter 18 Class Notes The Genetics of Viruses and Bacteria Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 18 The Genetics of Viruses and Bacteria Microbial Model Systems: Viruses called bacteriophages can infect and set in motion a genetic takeover o
Harvard - BIO - 101
Chapter 16 Class Notes The Molecular Basis of Inheritance Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 16 The Molecular Basis of Inheritance Lifes Operating Instructions: In 1953, James Watson and Francis Crick introduced an elegant double-helical m
Harvard - BIO - 101
Chapter 15 Class Notes The Chromosomal Basis of Inheritance Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 15 The Chromosomal Basis of Inheritance Locating Genes on Chromosomes: A century ago, the relationship between genes and chromosomes was not obv
Harvard - BIO - 101
Chapter 14 Class Notes Mendel and the Gene Idea Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 14 Mendel and the Gene Idea Overview of Genetics: Various genetic principles account for the passing of traits from parent to offspring. The blending hypoth
Harvard - BIO - 101
Chapter 13 Class Notes Meiosis and Sexual Life Cycles Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 13 Meiosis and Sexual Life Cycles Hereditary Similarity and Variation: Living organisms are distinguished by their ability to reproduce their own kind
Harvard - BIO - 101
Chapter 12 Class Notes The Cell Cycle Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 12 The Cell Cycle The Key Roles of Cell Division: The ability of organisms to reproduce best distinguishes living things from nonliving matter. The continuity of life
Harvard - BIO - 101
Chapter 11 Independent Notes Cell Communication Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 11 Cell Communication Evolution of Cell Signaling: Yeast (Saccharomyces cerevisiae) mating behavior is coordinated by chemical signaling. Yeast cells identi
Harvard - BIO - 101
Chapter 10 Class Notes Photosynthesis Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 10 Photosynthesis Photosynthesis: Photosynthesis is the process that converts solar energy into chemical energy. Directly or indirectly, photosynthesis feeds the bios
Harvard - BIO - 101
Chapter 9 Class Notes Cellular Respiration Page 1 Max Sauberman AP Biology Mr. Schilp Chapter 9 Cellular Respiration: Harvesting Chemical Energy Life is Work: Living cells require energy from outside sources. Some animals obtain energy by eating plants; o
Harvard - BIO - 101
Chapter 6 Class Notes A Tour of the Cell Page 1 Max Sauberman AP Biology Class Notes Chapter 6 A Tour of the Cell Discovery of Cells: In 1665, Robert Hooke discovered cells while looking at a thin slice of cork (a Portuguese tree). He described the cells
Harvard - BIO - 101
Chapter 7 Class Notes Membrane Structure and Function Page 1 Max Sauberman AP Biology Class Notes Chapter 7 Membrane Structure and Function Overview Life on the Edge: The plasma membrane is the boundary that separates the living cell from its nonliving su
Harvard - BIO - 101
Chapter 4 Class Notes The Structure and Function of Macromolecules Page 1 Max Sauberman AP Biology Class Notes Chapter 5 The Structure and Function of Macromolecules Macromolecules: Small organic molecules are joined together to form large macromolecules,
Harvard - BIO - 101
Chapter 4 Class Notes Carbon and the Chemistry of Life Page 1 Max Sauberman AP Biology Class Notes Chapter 4 Carbon and the Chemistry of Life Carbon: Carbon has six protons and four valence electrons, giving it a property called tetravalence. It likes cre
Harvard - BIO - 101
Chapter 3 Class Notes Water and the Fitness of the Environment Page 1 Max Sauberman AP Biology Class Notes Chapter 3 Water and the Fitness of the Environment Water on Earth: Clouds are made of water, in vapor form. Oceans are made of liquid water. The Nor
Universidad de Chile - ECE - 746
Hume: Este filosofo ingls es considerado uno de los grandes precursores del empirismo universal. Esta corriente se basa en dos grandes ideas: 1) todo conocimiento deriva de la experiencia 2) todo conocimiento es inductivo. A modo general, Hume plantea que
LSU - PHYSICS - 2001
PHYSICS 2001 Spring 2011Lecture Room - 130 Nicholson HallSection 1 2 3NameDan Sheehy Philip Adams Jiandi ZhangDays and Times12:40 1:30 MWF 11:40 12:30 MWF 9:10 10:30 TThOffice, Phone, Email210-B Nicholson, 8-5852, sheehy@phys.lsu.edu 210-C Nichols
LSU - PHYSICS - 2001
Physics 2001 Formula Sheet 2, G = 6.67 x 1011 m3/(kgs2) Constants: g = 9.8 m/s b b 2 4 ac Quadratic Formula: 0 = at 2 + bt + c t= 2a 2 2 2 Law of Cosines: C = A + B 2 AB cos Vector Components: A = Ax x + Ay y Ax
LSU - PHYSICS - 2001
LSU - PHYSICS - 2001
LSU - PHYSICS - 2001
LSU - PHYSICS - 2001
2.4 Kinematics for Constant Acceleration Now we can apply the concepts of displacement, velocity, and acceleration to pp describe the motion of objects. Before we begin, lets make one more simplifying condition We will only deal with objects that undergo
LSU - PHYSICS - 2001
1.8 The Component Method of Vector Addition Many times, using Law of Sines or Law of Cosines will work when doing times using Law of Sines or Law of Cosines will work when doing vector addition. However, there are times when the geometry can get complicat
LSU - PHYSICS - 2001
PHYS2001 Physics 11.1 The Nature of Physics From the very big to the very small, Physics covers it all! This semester we will focus on Classical Mechanics big things moving slowly (wrt the speed of light). Next semester you will study Electricity and
LSU - PHYSICS - 2001
Chapter 6 - AppendixIndifference CurvesCopyright 2008 Pearson Addison-Wesley. All rights reserved.5-1Figure 6A.1 Hughs Indifference CurveAt every point on the indifference curve, the utility level is the same. Literally, the individual is indifferent
LSU - PHYSICS - 2001
PracticeProblems1) Ifabindingpriceceilingisinplaceandifthedemandfortheproductshiftsoutward,one consequencewouldbe A) thequantityexchangedwouldincrease. B) anincreaseintheamountofexcesssupply. C) thequantityexchangedwouldremainconstant. D) thequantityexch
LSU - PHYSICS - 2001
Chapter 5Markets in ActionCopyright 2008 Pearson Addison-Wesley. All rights reserved.5-1Equilibrium AnalysisPartial-equilibrium analysis examines a single market in isolation and ignores feedback effects from other markets.In general, this is approp
LSU - PHYSICS - 2001
The Algebra of Market EquilibriumDemand and Supply curves each give us a schedule of quantities that is a function of price. As you saw before, where those curves cross determines the market equilibrium and therefore, the equilibrium price and quantity.
LSU - PHYSICS - 2001
Economicissuesandconcepts16:48Interactionofselfinterestedpeoplecreatesaspontaneoussocialorderthe economyisselforganizing Selfinterest,notbenevolenceisthefoundationofeconomicorderAdamSmith(wealthofNations) Efficiencymeansthattheresourcesareorganizedsoas
LSU - PHYSICS - 2001
Chapter 4ElasticityCopyright 2008 Pearson Addison-Wesley. All rights reserved.4-1Price Elasticity of DemandDemand is elastic when quantity demanded is relatively responsive to a change in the products own price. Demand is inelastic if quantity demand
LSU - PHYSICS - 2001
ECON 2000 Principles of MicroChapter 3 Demand, Supply and PriceCopyright 2008 Pearson Addison-Wesley. All rights reserved.1-1DemandWhat is Quantity Demanded?The amount that consumers desire to purchase in some time period is called the quantity dema
LSU - PHYSICS - 2001
ECON 2000 Principles of MicroChapter 1 Economic Issues and ConceptsCopyright 2008 Pearson Addison-Wesley. All rights reserved.1-1The Complexity of the Modern EconomyTheSelfOrganizingEconomyWho or what provides the goods and services individuals desi
LSU - PHYSICS - 2001
ECON 2000 Principles of MicroChapter 2 How Economists WorkCopyright 2008 Pearson Addison-Wesley. All rights reserved.1-1Positive and Normative AdviceNormative statements depend on value judgments and opinions - cannot be settled by recourse to facts.
LSU - PHYSICS - 2001
Sketching the curve of y = f (x) 1. Find any x- and y -intercepts. x-intercept is a point where y = 0. y -intercept is a point where x = 0. For rational functions we may consider the vertical or horizontal asymptotes. x = k making the denominator zero is
LSU - PHYSICS - 2001
LSU - PHYSICS - 2001